Dual Sovereignty Doctrine
dual sovereignty doctrine n: a doctrine holding that more than one sovereign (as a state government and the federal government) may prosecute an individual without violating the prohibition against double jeopardy if the individual's act breaks the laws of each sovereignty
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.